RBR50 Flashing White Continually - Won't allow for ethernet connection either

I am looking (and hoping) for any ideas that the community might have on an issure with my Orbi system. I woke up yesterday to find the Orbi RBR50 ring light on top of the unit continually pulsating white and no longer allow connectivity.  I can only assume there was some sort of firmware update failure during the night. I have followed the various suggestions to attempt to factory reset the router, but so far none of the reset attempts have changed the situation.  One thing I have noticed that after holding down the restart button for an extended period of time (getting first the solid amber power light and then the blinking amber power light) I will see the ring quicky flash green and orange before beginning to flash white again.

I also tried to to follow the instructions to update the firmware using the TFTP client. Unfortunately when I connect my computer to the RBR50 using an Ethernet cable the Ethernet connection cycles through either being connected or showing the cable unplugged every ten seconds through the Mac network panel. I can plug my computer directly into the modem with the ethernet cable with no problems so the ethernet connection/disconnection issues appear also to be related to the Orbi.  I am looking for any ideas on where to go next.  The RBR50 is less than two years old.  The ISP's modem/router Manufacturer and Model # is the Arcadyan PRV3397B-R-L-T. The ISP is Orange (I live in Spain).

Joe